More protection from punctures.

The Black Chili compound has become well-known, and praised for its ability to grip varied surfaces under demanding conditions. This is possible because the particles of Continental's Black Chili, which have been incorporated into the rubber, are so small that they have a high density for the contact patch of the tire. They mold to the ground's surface which increases the area with which the tires grip. Additionally, the particles are highly flexible which reduces friction and rolling resistance. The Black Chili also reduces tire wear which, in turn, increases longevity.

Added to the 4000 S II is Vectran. This is essentially a micro-fiber, thermoplastic yarn that is made from a liquid crystal polymer. It is highly puncture resistant while at the same time being lightweight.

The Black Chili particles are also literally more flexible, which reduces the rolling resistance of the GP 4000 S II. The Continental GP 4000 S II is available in 700x23 and one color; Black/black.

Here's what others have to say...

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Great racing tire

Familiarity:
I've put it through the wringer

These are the only tires that I had use since I bought my scott foil 2 years ago. Overall they are great tires for their intended purposed, racing. The tread compound does not last very long since use the black chili formula. A more softer rubber for better performance and grip. If your ride includes a lot of city street riding, I don't recommend this tire but if you just want to ride fast on weekends or in a peloton this is the tire for you.

Comment on Ariel M.'s review »

Not the best, not the worst

Familiarity:
I've put it through the wringer

For overall performance v durability it's a good tire. but durability is definitely lacking as is the really high end performance. As with most conti tyres, i get sidewall issues. Honestly I prefer Vittoria rubino's as they're cheaper and about the same performance.

Comment on Robert Smallman's review »

So many side wall failures

Gender:
Male

Familiarity:
I've put it through the wringer

The 4000s was my go to racing tire in the past. It rolled well and had adequate flat protection. The 4000s II has been nothing but a disappointment. I have had 4 of these tires fail due to cuts in the sidewall that ruin the tire. I am not sure what changed, but the lack of reliability of this tire compared to the original is appalling. Other people I ride with have been experiencing the same problems. The only positive for this situation is that I have discovered the Schwalbe One, which rolls very well and has had phenomenal flat protection for a racing tire. 0 flats in 1600 miles of gravel and cinder covered Ohio roads, including during early Spring when the roads were frequently being treated for snow. The 4000s II rides well while intact, but so does the One. Note the tube popping through the hole in the photo. That happened last Fall, before there was a lot of crap on the roads.

Comment on ji35812745's review »

Smaller diameter than the 4000S

Familiarity:
I've used it several times

I have been riding the 4000s for a long time. I was psyched to see a new version coming to market. I like the 25 mm size. These are considerably narrower than their predecessor. Bummer. I want a bigger tire under me, and this new and improved version has gone skinnier--odd choice for Conti given the trend to bigger tires. The moment I put them on I could see they were not as big as the 4000s I was replacing. On my rims, they measure 2 mm skinnier, sidewall to sidewall. The 4000s measure at 25mm on my rims. These things come in at 23mm. Improvement? No.

Comment on micp711429's review »

Best tire ever!

Familiarity:
I've put it through the wringer

This tire is the grippiest and most durable tire I've used. I've trained on 'em, raced on 'em, everything. I think they're the perfect balance between durability and performance. You can't have it all but with this tire, I believe it is the best of both worlds.

Comment on Roaddog's review »

One less worry at 50+ MPH

Familiarity:
I've put it through the wringer

I have ridden these GoTo tires for years on my old race bike (now taking on the commuter duties) and current race bike. Bombing down a canyon at 50+MPH and NOT having a single thought on if this tire can handle it it definitely #goatworth at the highest level.

My last race was in rain and I reduced the tire pressure to approx 80 PSI to improve traction and it worked like a charm. I love the tread life indicator dimple and always keep an extra set with the great deals at www.backcountry.com.

Comment on iBryonD's review »

High roller

Familiarity:
I've put it through the wringer

I've run these tires for about 12,000 miles (not the same pair obviously) and I can't say enough. The ride quality is smooth, responsive and grippy regardless of weather. I have honestly flatted about 5 times. 5 in 12,000 miles. I can generally get 4000 mi on the front and 3000-3500 mi on the rear and I'm a 200lb rider on country and chip sealed roads. There are probably better riding tires, and stronger tires, and there are certainly cheaper and more expensive tires, but I cannot find a perfect combo of everything. These are my only choice in tires. Period.

Comment on Jellycrablegs's review »

New 25mm tire review

Familiarity:
I've used it several times

Went to 25mm because the pros are riding 25's. Was a little leary because I'm a 4000s rider and I love my 4000s. The 4000s II's are just as grippy and fast. The wider tire is a little tough to get on/off the bike, but no big deal. So far, no problems with wear or sidewall punctures like my old Michelins. Rides a lot smoother than the Mavic tires that came with my Kysirium SLR's. As it heats up some more, I'll see how it holds up to more miles!!

Comment on MelVel's review »

Fantastic!

Familiarity:
I've put it through the wringer

With the opportunity to test a lot of different tires, I have yet to find a better work house tire like the Grand Prix 4000 S II. These are reliable, durable, and very rarely get any flats even on rough roads and under heavy fire from debris during the winter/spring in Utah. Though they're certainly not as supple like a vittoria or challenge, they're perfectly capable in tight cornering and "feel" plenty fast enough to handle any road race. If you don't want to run a training specific tire and race specific tire, this is the tire to go with. It can handle it all and last a very long time doing so.

Comment on Larry S.'s review »

Disappointed in the S II

Gender:
Male

Familiarity:
I've put it through the wringer

It pains me to say this, but I'm finding the S II inferior to the S, which I rode and raved about for years. I've found the S II's to be horribly flat prone. I have so many punctured tubes in my garage I could by another set of tires. On our last century, my wife and her friend, both on these tires, suffered 4 flats. I'm so frustrated that I may switch after riding nothing but Conti for the last 20 years.

Comment on Jerry M.'s review »

This tire can take a beating...

Gender:
Male

Familiarity:
I've put it through the wringer

These are my most recent tire experiments. I bought them in 700x25 sizing. Mounted on my 23mm rim, they measure about 28mm wide. Previous tires this year include Vittoria Rubino Pro III Slicks, Michelin Pro4 Service Course, Veloflex Open Corsa, and Vredestein Fortezza Senso All Weather.

Things I like: - They're durable and can take a beating but feel every bit as "fast" as slick tires - Reflex material is a nice bonus on "black tires" -- shine a line on them and they're very visible in the dark - Comes in colors - Comes in even wider 700x28 size (I don't know how wide these measure)

I don't hear much road noise when riding on these, and there's no "buzz" even when riding at higher pressures. I can see why people say this is probably the "best" tire you can get without putting in too much thought or fuss.

My only experience was with the previous GP4000S, and I was unfortunate enough to have suffered the "poor sidewall" problem. I've had the GP4000 SII for about 1,000 miles now in the last 3 months and they've done a superb job for all-around riding in California dry and wet conditions.

A testament to these tires taking a beating -- I rode on a fully-deflated tire for 26-miles, stuffed only with leaves to get me to the finish line (stuck in the middle of nowhere at 8PM, no cellphone service, with no tubes left). The tire was worse for wear and had a lot of bruising, but there weren't any cuts or fraying, and my rear wheel was still fine despite that abuse.

I'm plenty happy with the 700x25 tire but would like to see just how the 700x28 tires fare.

Oh man, I was in the same shoes...no more spares, patches, riding on Continental Gatorskin. I stuffed mine with a dirty rag found on the side of the road, cut into long strips. You do what you gotta do to get back to civilization...

Comment on FlyingScot's review »

Great tire!

Familiarity:
I've put it through the wringer

Can't understand the mid rank review of this tire. I have been running these for about a year and they are excellent in wear; grip; mixed road conditions; and super quick! The contact patch is great and the tires seem to be wearing uniformly and not so quick to boot. Not sure why others really dislike these because I am sold unless the next set proves me wrong.

Comment on OrbeaRider70's review »

Dead solid

Familiarity:
I've put it through the wringer

Have these on all my bikes, and trust them to last a long time and grip quite well. I climb hills to go down them quickly, and demand reliability of handling and puncture resistance in my tires. These do the job quite nicely.

Comment on Tim Az's review »

Jury Still Out.

Familiarity:
I've used it several times

Have just over 200 miles on these tires and they are definitely better cornering, especially descending. But these tires feel sluggish to me and seem slower on acceleration and on ascents (based on a comparison of timed segments with Strava). Put the old 4000s back on just to see. I would say these are somewhere between Gatorskins and the old 4000s

Comment on Carter's review »

When will you offer the 700X28 size?

At this time we do not have an order in for that size. Maybe check back in a month or so to see if we have placed an order for that size. If you would like to explore similar tire options in that size feel free to chat with a Gearhead online or call us at 1-800-409-4502